Xylem MULTI 3400i pH/Oxi MULTI-PARAMETER METERS - Manual (Page 41)

pH/ 3400i Operation
41
4.5 Calibration intervals (Int 3, Int 4)
For each measured variable, a time interval is stored. When it has ex-
pired, you will be reminded to calibrate. After a calibration interval has
expired, the probe symbol of the relevant measured variable flashes. It
is still possible to measure. By calibrating the relevant probe, the func-
tion is reset and the interval starts anew.
The following calibration intervals are set in the factory:
Setting the calibration
interval
You can change each of these intervals (1 ... 999 days):
Measured
parameter Designation Default setting
pH/ORP Int 3 7 days (d 7)
Dissolved oxy-
gen Int 4 14 days (d 14)
1 Switch off the measuring instrument.
2 Press the key and hold it down.
3 Press the key.
The display test appears briefly on the display. After this, the
measuring instrument automatically switches over to configu-
ration.
4 Press the key repeatedly until Int 3 or Int 4 and
the required measured variable pH or O
2
appears. Example:
5 Set the required interval (in days) until the next calibration with
<
▲> <▼>.
6 Confirm with .
7 Switch to the measuring mode with .
O
8 1
° C
TP
ARng
mg/l
LoBat
Baud
Day.Month No.
Ident Year
Sal
%
mbar
S
RCL AR
Store Auto
° F
1/cm
/ K %
TDS Sal
mV/pH
S/ m cm
cm M
Lin
Tref25 Tref20
nLF
AutoCal DIN
AutoCal TEC
7
t 3 n 1
d Time
Cal
pH